<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>demo</title>
    <link rel="stylesheet" href="./index.css">
</head>

<body>
    <!-- <img src="http://f.hiphotos.baidu.com/image/pic/item/503d269759ee3d6db032f61b48166d224e4ade6e.jpg" alt=""> -->
    <div id="container" onscroll="watchScroll()">
        <div class="p-img">
            <img class="lazy-load" data-src="http://f.hiphotos.baidu.com/image/pic/item/503d269759ee3d6db032f61b48166d224e4ade6e.jpg"
            />
        </div>
        <div class="p-img">
            <img class="lazy-load" data-src="http://a.hiphotos.baidu.com/image/pic/item/500fd9f9d72a6059f550a1832334349b023bbae3.jpg"
            />
        </div>
        <div class="p-img">
            <img class="lazy-load" data-src="http://a.hiphotos.baidu.com/image/pic/item/d6ca7bcb0a46f21f46612acbfd246b600d33aed5.jpg"
            />
        </div>
        <div class="p-img">
            <img class="lazy-load" data-src="http://d.hiphotos.baidu.com/image/pic/item/a044ad345982b2b713b5ad7d3aadcbef76099b65.jpg"
            />
        </div>
        <div class="p-img">
            <img class="lazy-load" data-src="http://e.hiphotos.baidu.com/image/pic/item/500fd9f9d72a6059099ccd5a2334349b023bbae5.jpg"
            />
        </div>
    </div>

    <button id="button" onclick="addImage()">增加图片</button>
    <script src="./vendor/hz-lazyload/hz-lazyload.js"></script>
    <script>
        // document.getElementsByClassName('container')[0].ontouchstart = function() {
        //     return false;
        // }
        // document.body.ontouchmove = function(e) {
        //     e.preventDefault();
        //     return false;
        // }
        // document.body.onmousemove = function(e) {
        //     e.preventDefault();
        //     return false;
        // }
        // document.body.onmousewheel = function(e) {
        //     console.log(e);

        //     e.preventDefault();
        // }

        let srcList = ['http://c.hiphotos.baidu.com/zhidao/pic/item/d50735fae6cd7b8964afe8f10c2442a7d8330e85.jpg',
            'http://img5.niutuku.com/phone/1212/3752/3752-niutuku.com-22310.jpg',
            'http://cdn.duitang.com/uploads/item/201504/19/20150419H0823_WSGAM.jpeg',
            'http://img0.imgtn.bdimg.com/it/u=1363910025,3482458907&fm=214&gp=0.jpg',
            'http://i2.hdslb.com/bfs/archive/95e5351273b72b587d929c7593fb6ffd66cb220a.jpg'
        ]
        let button = document.getElementById('button');
        // document.getElementsByClassName('container')[0].onscroll = function() {
        //     console.log('用户自定义的scroll事件');
        // }

        // 创建lazyload实例
        let lazyload = new HzLazyLoad({
            className: 'lazy-load',
            container: 'container',
            distance: '100',
            placeholder: './images/loading.gif'
        });
        lazyload.render();

        function addImage() {
            document.getElementById('button').style.display = 'none';
            for (let i = 0; i < srcList.length; i++) {
                let div = document.createElement('div');
                div.className = 'p-img';
                let img = document.createElement('img');
                img.className = 'lazy-load';
                img.setAttribute('data-src', srcList[i]);
                div.appendChild(img);
                // document.getElementsByClassName('container')[0].insertBefore(div, button);
                document.getElementById('container').appendChild(div);
            }
            lazyload.render();
        }

        function watchScroll() {
            // console.log('用户自定义的scroll事件');
        }
    </script>
</body>

</html>
